Mobilizon

Free plan APILinuxSelf-hostedWeb

What Mobilizon is

Mobilizon is a free, open-source platform for creating, sharing, and finding events and organizing communities. Organizers can create, edit, and delete events, save drafts before publication, share events by email or social media, and manage participation. Visitors can search for events, activities, and groups by keyword, place, or date. Groups can publish pages for activities and events, manage members, and share private content. One account can have multiple identities for different activities. Mobilizon uses ActivityPub to share content between instances and interact with other Fediverse software. Federation subscriptions work one way, carry only public content, and exclude events created before the subscription. Groups can provide RSS and ICS feeds, and event import and export support standard formats including ICS and RSS. Each instance has a GraphQL API for tasks such as searching for and creating events; the API may vary between software versions. Administrators can moderate users, and unsolicited content can be reported and removed. Privacy settings and participant roles are supported, and people can interact with events without registering. Mobilizon can be self-hosted and installed from a precompiled release, Docker image, source, or a community-maintained NixOS module. The project began in 2019 with Framasoft and has been maintained since 2024 by the French nonprofit association Kaihuri, with financial support from NLnet.

Who it suits

Mobilizon suits organizers and communities that want to publish events and manage groups using free, open-source software. It is also relevant to people seeking self-hosting, ActivityPub federation, or event discovery without requiring registration to interact with events.

What it does well

Free and open source.
Search events, activities, and groups by keyword, place, or date.
Groups can manage members and share private content.
Supports event import and export in formats including ICS and RSS.
Event interaction can happen without registration.
Can be self-hosted or installed from several distribution routes.

What to know first

Federation subscriptions are one-way and transmit only public content.
Events created before a federation subscription are not transmitted.
The GraphQL API may differ between software versions.

Getting started

Open the Mobilizon website to learn about the platform and hosting options.
Choose self-hosting or professional hosting through Kaihuri.
For self-hosting, install from a precompiled release, Docker image, source, or community-maintained NixOS module.
Use the documented installation instructions for supported Debian, Ubuntu, or Fedora releases.
Create or find events and groups through a Mobilizon instance.

Verdict

Choose Mobilizon if you want a free, open-source event and community platform with self-hosting and ActivityPub federation. Its event tools, group pages, and feeds support organizing and discovery. Review the one-way federation limits if sharing events across instances is important to your community.

Questions

Is Mobilizon free?

Yes. Mobilizon is free and open source.

Can I host Mobilizon myself?

Yes. Self-hosting is an option, with installation routes including a precompiled release, Docker image, source, and a community-maintained NixOS module.

What platforms does it support?

Mobilizon is available for web, Linux, self-hosting, and through an API.

Can Mobilizon share events with other Fediverse software?

Yes. It uses ActivityPub to share content between instances and interact with other Fediverse software. Federation subscriptions are one-way and carry only public content.

Can people interact with events without an account?

Yes. Event interaction is possible without registration.

What import and export formats does it support?

Event import and export support standard formats including ICS and RSS. Groups can also provide RSS and ICS feeds.

Facts from Mobilizon's own pages

API: Each instance provides a GraphQL API for operations such as searching for and creating events; the API may differ between software versions. · docs.mobilizon.org, 4 Oct 2026
Discovery: Visitors can search for events, activities, and groups by keyword, place, or date. · mobilizon.org, 11 Oct 2026
Events: Users can create, edit, delete, and draft events, share them by email or social media, manage participation, and send participant email notifications. · mobilizon.org, 11 Oct 2026
Federation: Mobilizon instances can federate with each other, allowing users on one instance to register for events created on another. · docs.mobilizon.org, 11 Oct 2026
Federation limit: Federation subscriptions are one-way, transmit only public content, and do not transmit events created before the subscription. · docs.mobilizon.org, 4 Oct 2026
Founded: 2019 · mobilizon.org, 28 Sept 2026
Groups: Groups have public pages for posting content and tools to manage members and private content. · mobilizon.org, 11 Oct 2026
Hosting: Mobilizon is free software that anyone can host as an instance; the maker also describes professional hosting services available by contacting them. · docs.mobilizon.org, 11 Oct 2026
Integrations: Groups can provide RSS and ICS feeds, and the software supports event import and export in standard formats including ICS and RSS. · mobilizon.org, 4 Oct 2026
Intended users: The maker presents Mobilizon as suitable for cooperatives and teams, associations and activists, and public institutions such as cities, universities, and schools. · mobilizon.org, 11 Oct 2026
Interoperability: Mobilizon supports event import and export in standard formats including ICS and RSS, and offers a GraphQL API. · mobilizon.org, 11 Oct 2026
Language and geocoding: The product page says Mobilizon is available in more than 20 languages and has a global geocoding system. · mobilizon.org, 11 Oct 2026
Maintainer: Kaihuri has maintained Mobilizon since 2024 and describes itself as a small volunteer team; project support is through donations. · mobilizon.org, 11 Oct 2026
Moderation: Instance administrators can moderate users, and unsolicited content can be reported and removed. · mobilizon.org, 11 Oct 2026
Multiple identities: One account can have multiple identities for different kinds of activities. · docs.mobilizon.org, 11 Oct 2026
Privacy: The documentation says privacy settings and participant roles are supported, and event interaction is possible without registration. · docs.mobilizon.org, 4 Oct 2026
Privacy controls: Events support privacy settings and participant roles, and people can interact with an event without registering. · docs.mobilizon.org, 11 Oct 2026
Purpose: Mobilizon is a federated platform for managing communities and events, intended to help people move away from centralized event platforms. · docs.mobilizon.org, 11 Oct 2026
Security and trust: The official site describes the software as open source and publicly auditable, and the documentation says it is under a free license. · mobilizon.org, 11 Oct 2026
Support: Mobilizon documentation directs users to seek support on the forum or chat. · docs.mobilizon.org, 4 Oct 2026
Supported installation: The installation guide recommends a precompiled release for listed Debian, Ubuntu, and Fedora versions, and also documents Docker, source, and a community maintained NixOS module. · docs.mobilizon.org, 11 Oct 2026

Where Mobilizon stands on Freedom251

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